Java Shinwow.N

I have been running A beta test for Zonealarm That comes with built in AV. It detects 7 files--5 are java byte verify exploits and 2 Trojans--Shinwow.N. I have tried running Trend Micro housecall and my AVG 6 does not pick this up at all. The AV cannot repair them however.
From what I can find on this trojan it is supposed to modify my homepage---but nothing seems to have changed---except possibly some weird search results. Does anyone know how to find this nasty? Which file is it in? I can't get the full file name from the AV. Thanks for any help----I was clean for so long!!